Morris Library contains a wealth of historical information on slavery, abolition and the Underground Railroad. This select bibliography can be used to identify encyclopedia entries, books, newspaper and periodical articles, and full-text information online. A few good starting points are:
African American women--Biography
African Americans--History--19th century
Slavery in the United States
Slavery in the United States--Condition of slaves
Below are a few databases that will provide you with articles written during slavery (primary sources), as well as those written in later periods (secondary sources).
Newspapers are excellent sources of historical information. Newspapers written during the slavery era are valuable primary sources, while current newspapers such as the Wilmington News Journal will provide helpful secondary accounts of the Underground Railroad.